<template>
  <div class="app-container">
    <div>
      <FilenameOption v-model="filename" />
      <AutoWidthOption v-model="autoWidth" />
      <BookTypeOption v-model="bookType" />
      <el-button
        :loading="downloadLoading"
        style="margin: 0 0 20px 20px"
        type="primary"
        icon="el-icon-document"
        @click="handleDownload"
      >
        {{ $t("excel.export") }} Excel
      </el-button>
      <a
        href="https://panjiachen.github.io/vue-element-admin-site/feature/component/excel.html"
        target="_blank"
        style="margin-left: 15px"
      >
        <el-tag type="info">Documentation</el-tag>
      </a>
    </div>

    <el-table
      v-loading="listLoading"
      :data="list"
      element-loading-text="Loading..."
      border
      fit
      highlight-current-row
    >
      <el-table-column align="center" label="Id" width="95">
        <template slot-scope="scope">
          {{ scope.$index }}
        </template>
      </el-table-column>
      <el-table-column label="Title">
        <template slot-scope="scope">
          {{ scope.row.title }}
        </template>
      </el-table-column>
      <el-table-column label="Author" width="110" align="center">
        <template slot-scope="scope">
          <el-tag>{{ scope.row.author }}</el-tag>
        </template>
      </el-table-column>
      <el-table-column label="Readings" width="115" align="center">
        <template slot-scope="scope">
          {{ scope.row.pageviews }}
        </template>
      </el-table-column>
      <el-table-column align="center" label="Date" width="220">
        <template slot-scope="scope">
          <i class="el-icon-time" />
          <span>
            {{ scope.row.timestamp | parseTime("{y}-{m}-{d} {h}:{i}") }}
          </span>
        </template>
      </el-table-column>
    </el-table>
  </div>
</template>

<script>
import FilenameOption from "./FilenameOption";
import AutoWidthOption from "./AutoWidthOption";
import BookTypeOption from "./BookTypeOption";
import { parseTime } from "@/libs/utils";
export default {
  name: "ExportExcel",
  components: { FilenameOption, AutoWidthOption, BookTypeOption },
  data() {
    return {
      list: [],
      listLoading: true,
      downloadLoading: false,
      filename: "",
      autoWidth: true,
      bookType: "xlsx",
    };
  },
  created() {
    this.fetchData();
  },
  methods: {
    fetchData() {
      this.listLoading = true;
      this.$apis.article.fetchList().then((response) => {
        this.list = response.data.items;
        this.listLoading = false;
      });
    },
    handleDownload() {
      this.downloadLoading = true;
      import("@/vendor/Export2Excel").then((excel) => {
        const tHeader = ["Id", "Title", "Author", "Readings", "Date"];
        const filterVal = [
          "id",
          "title",
          "author",
          "pageviews",
          "display_time",
        ];
        const list = this.list;
        const data = this.formatJson(filterVal, list);
        excel.export_json_to_excel({
          header: tHeader,
          data,
          filename: this.filename,
          autoWidth: this.autoWidth,
          bookType: this.bookType,
        });
        this.downloadLoading = false;
      });
    },
    formatJson(filterVal, jsonData) {
      return jsonData.map((v) =>
        filterVal.map((j) => {
          if (j === "timestamp") {
            return parseTime(v[j]);
          } else {
            return v[j];
          }
        })
      );
    },
  },
};
</script>

<style>
.radio-label {
  font-size: 14px;
  color: #606266;
  line-height: 40px;
  padding: 0 12px 0 30px;
}
</style>